Pump-actuating means for type-casting machines.



SLE. SPBHRY. PUMP AGTUATING MEANS FOR TYPE CASTING MACHINES. APPLICATION FILED JAN. 29,, 1913.

Patented Aug. 25, 191% i VENIQR- ATYORNE"? moeeoa.

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UNITED STATES PATENT OFFICE E. SPERRY, 0F WOODHAVEN, NE\V YOP,K. ASSIGNOR T0 INTER-NATIONAL TIEESETTING MACHINE COMPANY, OF NEW YORK, N. Y.. A CORPORATION OF NEW YDIRK.

PUHP-ACTUATING MEANS FOR TYPE-CASTING MACHINES.

State of New York, have invented new and in Pump-Actuating useful Improvements of which Means for Type-Casting Machines, the "following is a specification:

The present invention relates to improvements in casting mechanism as employed in connection with type casting machines and is particularly applicable to casting mechanisms of the character used in machines of the well known linotype class Heretofore, it has been customary in machines of that class to actuate the plunger oi' the metal pump by a coiled compression spring placed above the pump lever, but experience has shownthat springs of that type are liable to lyuckle unless guiding means is provided to retain the spring" in proper form. it has also been proposed to use tension springs, to actuate the pump, but those springs were not positioned directly above the pump lever Where they would, act with the greatest eiiiciency.

It is the object of the present invention to provide novel spring actuating-means for the pump which embodies a. helical tension spring which will always retain its proper form and is placed directly above the pump lever whereit will act with the greatest efficiency to effect the working strokes of the pump when permitted to do so by the pumpcontrolling cam.

The present invention also provides simple and improved means for connecting the spring to the pump lever whereby the tension of the spring may be adjusted quickly and easily and without displacing the spring, and this connection can be removed it necessary without disturbing the spring.

To this end, the invention consists in certain improvements, and combinations and arrangements of parts, all as will be hereinafter more fully desc ibed, the novel features, being pointed out particularly in the claims at the end of the specification.

The accompanying drawing shows the present invention applied to pump mechanism of the type usually employed in machines of the linotype class.

in this instance, 1 designates a portion of the cylinder of the metal pump which may be of the type generally used in casting ma.-

Specification of Letters Patent. Application filed January 29. 1913. Serial No. 745,042.

Patented Aug. 25, 1914-,

chines wherein the cylinder occupies a position within the metal pot and the lower end of the cylinder communicates with a spout or nozzle which serves to conduct the metal at each operz'ition of the pump to the mold. in the Well known manner.

2 designates the lunger which operates in the pump cylin er and serves to force,

metal therefrom and throu the spout or nozzle when the plunger is forced down wardly. The plunger is attached to an upwardly extending rod 3 and the latter is pivotally connected to the pump-actuating lever 4-, .this lever being pivotally connected at 5 to the pump bracket v6 and the latter may be secured, usual, to the main frame of the machine. A roller 7 is mounted on the pump actuating lever 4 and 8 shows a.-

portion of the cam which controls the operation of the pump. The roller 7 on the pump lever is forced against the cam 8 by spring pressure, and the cam is so shaped that it will permit the spring pressure acting on the pump lever to force the pump plunger downwardly to eject a supply of metal from the pump and will lift the nump plunger to produce the return stroke thereof at appropriate intervals.

According to the present invention, a lug! 9 is termed on or attached to the stationarv pump bracket 6, this lughaving a bore 10 extending vertically through the center thereof, and the periphery of the lug is formed with a helical groove 11 in which are fitted the convolutions at the lower end of a he ical spring 12, the lower end of the spring being thereby secured. or fixed to the lug. This helical spring 15 of the tension type, that is to Say. it normally has a tendency to contract in the direction of li's axis, the u per end of the spring being secured to a )PHl 13 which 18 also preferably provided with a helical groove .14 in which fit the convolutions at the upper end of the The rod 15 in. the present instance is conof therod, as shown being lhreinjlcd at 1.7

to engage the correspondingly threaded head 13, and a lock nut l8-inay be provided for locking the rod 15 in diii'erent adjusted positions. To adjust the tension of the spring action on the pump, it is only necessary to loosen the lock nut 18 and to turn the rod 15 in an appropriate direction. Also, the rod 15 maybe removed by unscrewing itand witlulrawing it upwardly through the head 13 without disturbing the spring. The

spring always under tension and hence it will retain itself in proper form and position, and owipg to its location directly above the piunp-actualing lever. it will. operate with the greatest eiliciei'icy to produce the working strokes of the pump under the control of the cam. i

Iclaim as my invention 1. In casting mechanism of the class de scribed, the combination of a pump, a helical tension-spring having one end thereof fixed, and a rod adjustably connected to the free end of the spring, said rod extending thriz-ugh-thc spring and cooperating with the pump and being removable ihdependently of the spring.- i

'2. In casting mechanism-of the class described, the combination of a metal pump, a member for operating it, a helical tensi n spring having its lower end figicd directly above said pump-operating member, and a rod connected to the upper end of the spring and extending downwardly through the spring and bearing on said operating member, said rod being removable. while the spring remains in position.

3. In casting mechanism of the class .described, the combination of a metal pump, a helical tension spring having one end there: of fixed, a head cooperative. with the opposite cny' of the spring, and a rod cooperative with the pump to a tuate it, said rod being 5 pump.

longitudinally adjustable through said head and extending through the spring.

4. In casting mechanism of the character described, the con'ilination of a metal pump having a lever for actuating it, a relativelj fixed braclu having a lug thereon formed with a vertical bore above said lever, a helical tension sprii'ig having its lower end attached to said lug, and means connecting theupper end of the spring to the pump lever, said connecting means extending axially throu h the spring and througl'i the bore in said lug and being removable from the spring while the latter remains in position.

5. In a machine of the linotyp-e class, the combination of the metal pump lever, the supporting frame or bracket, and an exr landed helicalspring mounted on the supporting frame above the pump lever having its lower end fastened to the frame and having means connecting its upper endto the pump lever, the connectin means passing through the spring Where y a downward pressure is exerted upon the pump lever, and said connecting means being removable. while the spring remains in position.

6. In a machinc'of the linot-ype class, the combination of the metal pump having a lever for actuating it, a cam cooperative with said lover, a supporting frame. and a tension syn-lug mounted above the pump lever and having means operatively connecting one end to the pump lever and having its other end connected to the supporting frame, the tension of said spring maintaining the pump lever 1n cooperative relation with the cam and tending to actuate the In testimony whereof I have hereunto setin hand in presence of two subscribing witnesses.

- SAMUEL E. SPERRY. 'itnesses O; (l, IIINE,

K. \V. Harmon. 

